Join them during Whale Watching season as they marvel at these incredible creatures frolicking and swimming in the tranquil waters of the Pacific Ocean. Whale watching off Sydney Heads is an exhilarating adventure, an awe inspiring treat that you will remember forever! The southern hemisphere humpback migration is estimated to be approximately 30,000 whales this year, with an average increase of 11 percent per year, quite amazing considering these magnificent creatures were nearly hunted to the point of extinction 40 years ago.